Spring core for tires



June 2, 1 925.

H. TRUMAN SPRING CORE FOR TIRQS Filed May 16 1924 Patented June 2, 1925.

UNITED STATES GEORGE HENRY TRUMAN, Q15 VALLEY CITY, NORTH DAKOTA.

SPRING CORE FOR TIRES.

Application filed May 16,

To (ZZZ 10710422 276 may concern:

Be it known that I. GEORGE H. TRUMAN, a citizen of the United States, residing at Valley City in the county of Barnes and State of North Dakota, have invented a new and useful Spring Core for Tires, of which the following is a specification.

This invention relates to spring cores adapted primarily to be used in lieu of the inner tubes of tires.

One of the objects of the invention is to provide a novel form of spring core the body portion of which can be stamped from sheet metal of a resilient nature to provide an annular series of ring-like portions forming seats for the reception of the tread portion of the core.

A further object is to provide a structure of this character having novel means for connecting the ends so that the core will be held properly within the tire casing.

Another object is to provide a tread portion for use in connection with the resilient body portion, said tread portion comprising a resilient material having a rigid core formed of a sectional ring.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed may be made within the scope of what is claimed without departing from the spirit of the invention.

In the accompanying drawings the preferred form of the invention has been shown.

In said drawings Figure 1 is a view partly in side elevation and partly in section of a portion of a core embodying the present improvements.

Fig. 2 is a plan view of the structure shown in Fig. 1, the tread portion being removed.

Fig. 3 is a section on line 3-3, Fig. 1, showing in section a casing on the core.

Fig. 4 is a section on line 4c4:, Fig. 1, showing in section a casing on the core.

Referring to the figures by characters of reference 1 designates an elongated strip of resilient metal having side incisions 2 extending partly thereacross to provide tongues 3 therebetween. These tongues are 1924. Serial No. 713,759.

bowed transversely so as to extend toward each other and the ends of the tongues are onset inwardly and disposed in lapped relation to provide seats 4,the lapping ends of the tongues being fastened together by rivets 5 or in any other suitable manner. The body portion of the core thus formed is adapted 'to be bent to circular form with its ends abutting as indicated at 6 and these ends may be held together detachably by means of a tie plate 7 bearing on the end seats 4 of the body member of the core and having tongues 8 at its ends bent inwardly into engagement with the respective" end seats as shown in Fig. 2. A reinforcing sleeve 9 may be seated within the end or meeting portions of the core body so as to hold them in alinement. This sleeve is split as shown particularly in Fig. 4 so that the end seats a of the core body can project into the sleeve. The tread portion of the core consists of a tube 10 preferablyof rubber having thick walls. This tube is adapted to rest upon the seats 4 and is maintained in circular form by a sectional ring. The ring is preferably formed of arcuate tubes 11 of.

suitable metal the ends of which receive arcuate rods 12 having intermediate spacing collars 13. against the tube so that when the tubes and rods are assembled, they form a rigid sectional ring, the said ring constituting a rigid core for the tread portion.

In assembling the parts of the tire core the ends of the body portion thereof are offset relative to each other so that the body portion of the core can be suflicie-ntly constricted to be inserted into. the tread portion 10. Said body portion is then expanded until its ends are brought into alinement after which the sleeve 9, which is seated within one of the end portions, is shifted longitudinally to project into the other end portion. The tie plate 7 is inserted between the end seats of the body portion and the tread portion 10 after which the terminals of the tongue 8 arebent inwardly and backwardly, thereby to tie together the meeting ends of the body portion of the-core. The core is now properly assembled and can be readily placed in a tire casing C in the same manner as an ordinary tube.

What is claimed is 1. A tire core including an elongated strip of resilient metal having transverse side in- The rods fit snugly in and l cisions forming tongues therebetween, said tongues being curved toward each other and having inwardly offset, lapping connected ends constituting seats, and a tread portion mounted on the seats.

2. A resilient core including an elongated strip of metal having transverse side incisions forming tongues therebetween, said tongues being curved toward each other and having their ends inturned, lapping and fastened together to form seats, the seats being spaced apart circumferentially of the tire, an endless tread portion mounted on the seats, and a rigid sectional core Within the tread portion.

3. A resilient core including an elongated strip of metal having transverse side incisions forming tongues therebetween, said tongues being curved toward each other and having their ends inturned, lapping and con nected to provide circumferentially spaced seats, a bracing sleeve projecting into the end portions of the core, a tie device engaging the ends for holding them assembled with the sleeve, and an endless tread portion mounted on the seats.

4. A resilient core including an elongated strip of metal having transverse side incisions forming tongues therebetween, said tongues being curved toward each other and having their ends inturned, lapping and connected to provide circumferentially spaced seats, a bracing sleeve projecting into the end portions of the core, a tie device engaging the ends for holding them assembled With the sleeve, an endless tread portion mounted on the seats, said tread portion including a resilient tube and a sectional rigid core housed Within the tube and extending continuously Within said tube.

In testimony that I claim the foregoing as my own, I have hereto aflixed my signature in the presence of two Witnesses.

E. L. WILLIAMS, H. A. FIsK. 

